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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "database/sql" | ||
|
|
||
| "github.com/PeerDB-io/peer-flow/connectors/utils" | ||
| "github.com/PeerDB-io/peer-flow/generated/protos" | ||
| "github.com/jackc/pgx/v5/pgxpool" | ||
| "google.golang.org/protobuf/proto" | ||
| ) | ||
|
|
||
| func (h *FlowRequestHandler) getPoolForPGPeer(ctx context.Context, peerName string) (*pgxpool.Pool, error) { | ||
| var pgPeerOptions sql.RawBytes | ||
| var pgPeerConfig protos.PostgresConfig | ||
| err := h.pool.QueryRow(ctx, | ||
| "SELECT options FROM peers WHERE name = $1 AND type=3", peerName).Scan(&pgPeerOptions) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| unmarshalErr := proto.Unmarshal(pgPeerOptions, &pgPeerConfig) | ||
| if err != nil { | ||
| return nil, unmarshalErr | ||
| } | ||
|
|
||
| connStr := utils.GetPGConnectionString(&pgPeerConfig) | ||
| peerPool, err := pgxpool.New(ctx, connStr) | ||
| if err != nil { | ||
| return nil, unmarshalErr | ||
| } | ||
| return peerPool, nil | ||
| } | ||
|
|
||
| func (h *FlowRequestHandler) GetSlotInfo( | ||
| ctx context.Context, | ||
| req *protos.PostgresPeerActivityInfoRequest, | ||
| ) (*protos.PeerSlotResponse, error) { | ||
| peerPool, err := h.getPoolForPGPeer(ctx, req.PeerName) | ||
| if err != nil { | ||
| return &protos.PeerSlotResponse{SlotData: nil}, err | ||
| } | ||
| defer peerPool.Close() | ||
| rows, err := peerPool.Query(ctx, "SELECT slot_name, redo_lsn::Text,restart_lsn::text,active,"+ | ||
| "round((redo_lsn-restart_lsn) / 1024 / 1024 , 2) AS MB_Behind"+ | ||
| " FROM pg_control_checkpoint(), pg_replication_slots;") | ||
| if err != nil { | ||
| return &protos.PeerSlotResponse{SlotData: nil}, err | ||
| } | ||
| defer rows.Close() | ||
| var slotInfoRows []*protos.SlotInfo | ||
| for rows.Next() { | ||
| var redoLSN string | ||
| var slotName string | ||
| var restartLSN string | ||
| var active bool | ||
| var lagInMB float32 | ||
| err := rows.Scan(&slotName, &redoLSN, &restartLSN, &active, &lagInMB) | ||
| if err != nil { | ||
| return &protos.PeerSlotResponse{SlotData: nil}, err | ||
| } | ||
|
|
||
| slotInfoRows = append(slotInfoRows, &protos.SlotInfo{ | ||
| RedoLSN: redoLSN, | ||
| RestartLSN: restartLSN, | ||
| SlotName: slotName, | ||
| Active: active, | ||
| LagInMb: lagInMB, | ||
| }) | ||
| } | ||
| return &protos.PeerSlotResponse{ | ||
| SlotData: slotInfoRows, | ||
| }, nil | ||
| } | ||
|
|
||
| func (h *FlowRequestHandler) GetStatInfo( | ||
| ctx context.Context, | ||
| req *protos.PostgresPeerActivityInfoRequest, | ||
| ) (*protos.PeerStatResponse, error) { | ||
| peerPool, err := h.getPoolForPGPeer(ctx, req.PeerName) | ||
| if err != nil { | ||
| return &protos.PeerStatResponse{StatData: nil}, err | ||
| } | ||
| defer peerPool.Close() | ||
| rows, err := peerPool.Query(ctx, "SELECT pid, wait_event, wait_event_type, query_start::text, query,"+ | ||
| "EXTRACT(epoch FROM(now()-query_start)) AS dur"+ | ||
| " FROM pg_stat_activity WHERE usename='peerdb_user' AND state != 'idle' AND query_start IS NOT NULL;") | ||
| if err != nil { | ||
| return &protos.PeerStatResponse{StatData: nil}, err | ||
| } | ||
| defer rows.Close() | ||
| var statInfoRows []*protos.StatInfo | ||
| for rows.Next() { | ||
| var pid int64 | ||
| var waitEvent string | ||
| var waitEventType string | ||
| var queryStart string | ||
| var query string | ||
| var duration float32 | ||
|
|
||
| err := rows.Scan(&pid, &waitEvent, &waitEventType, &queryStart, &query, &duration) | ||
| if err != nil { | ||
| return &protos.PeerStatResponse{StatData: nil}, err | ||
| } | ||
|
|
||
| statInfoRows = append(statInfoRows, &protos.StatInfo{ | ||
| Pid: pid, | ||
| WaitEvent: waitEvent, | ||
| WaitEventType: waitEventType, | ||
| QueryStart: queryStart, | ||
| Query: query, | ||
| Duration: duration, | ||
| }) | ||
| } | ||
| return &protos.PeerStatResponse{ | ||
| StatData: statInfoRows, | ||
| }, nil | ||
| } |
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